Metal-scoring machine



March 10, 1925. 1,529,534

F. ADAMS METAL SCORING MACH'INE Filed Aug. 3, 1923 6 Sheets-Sheet 1FIG]. ,5. ,1

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Match 10. 1925.

- 1,529,534 F. E. ADAMS METAL SCORING MACHINE Filed Aug. 5, 1923 6Sheets-Sheet 2 fuveraf Ada/I l March 10, 1925. 1,529,534

' F. E. ADAMS METAL SCORING MACHINE 'lno'emior' Adams March 10.1925. 7 ff 1,529,534

- v F. E. ADAMS METAL sconnqe MACHINE Filed AuE'. 192s 6 vS heets-Shget4 4 Ada Ind wwz I March 10, 1925.

F. E. ADAMS METAL SCORING MACHINE e sheets-sheet 5 Filed Aug. 1923 4 22m 74-: fol 7Q? A clalzza 71179 March '10, 1925.

F. E. ADAMS METAL SCORING MACHINE Filed Aug. 3. 1923 6 Sheets-sheaf 6far/r2270 Patented Mar. 10, 1925.

UNITED sT T s PATENT oFFiciz.

FRANK EDWARD ADAMS, OF LOWER BEBINGTON, ENGLAND.

METAL-SCORING, MACHINE.

Application filed August3, 1923. Serial No. 555,424.

or sealed sheet or thinmetal boxes and tins,

and means for opening them of the kind, more particularly, wherein aportion of the body, or a strip forming a p'art of' same, is providedwith a series of indentations,

' scorings, or the like in lines of angular disposition, or of anangular and non angular disposition, and in some cases these indentations, scorings or the like may be in duplicate and parallel, one set oneach side of a central line and band of metal to betorn.

off. The object of such indentations, scorings, or the like is to weakenthe metal in the direction of tearing, and in the tearing or severingaction to cause the edges of the strip or band to more or lessfollowpredetermined paths. i

The invention has for its object and effect 'to generally provideimprovements in connection with such machines by which the work iseffected more rapidly, and better, and'the machine itself is improvedboth in durability and in general effectiveness of its operation.

The invention will be described with the aid of the accompanyingdrawings, which illustrate it.

The invention is illustrated in the annexed drawings, in which Figure 1shows a sheet of metal, which is to be formed into a can, provided Withthe scorings or indentations above referred to.

Figure 2 is a side elevationshowing part of the machine, Figure 8 isaview showing the opposite side of it, and Figure 4 is an end elevationof the machine.

Figure 5 is a front elevation, Figure-6 a side elevation in section, andFigures 7 and 8 are views showing details, of a modified form ofmachine, adapted to operate upon a plurality of sheets at the same time.

Referring to the drawings, 1 is the sheet of tin or metal which is toform the body of the box, and 3 is the band of indentations or scoringseffected in the machine,

consisting oftwo parallel lines-andtwo sets two. U V A tongue- 4 ofmetal is provided on "one g i two edges of the sheet which of inclineddiverging lines within the other are to be joined together, and vwillproject 7 from the finished can, andby engaging it with a suitableinstrument] and turning it round, the band within the outer scored lineswill tear" clean away, so that the upper part ofthe can is severed fromthe lower part; and in the act, if-either of the tear- .ings of the,band comes inward from the upper and lower parallel rings of scorings,the tearing isjled back to same by the'in clined,scorings, and thusfaulty tearing is obviat'ed. I

The anvil on which, the sheets rest and are scored is designated 6,and'the sheets are conveyed by an endless. chainconveyor 7, withprojections 8 on it, to and over the anv l, and such chain being passedoverv suitable sprocket wheels 9 at the ends of the table-10, alongwhich they are slid,and one of which will be rotated step by steprapidly soas to move the sheet the required distance to receive theblows of the tools at a fresh point for each blow,'as hereafterdescribed.

Referring more particularly to Figures 2 to 4, 13 is the frame or headof the machine on which the'scoring tools are carried, 18 are the tools,and 19 is the tool holder proper fixed to a slide plate 20, which slidesin guides 22011 the head 13, and is vibrated rapidly up and down.

The tool box 19 is secured to theplate 20 by stud bolts 23 which passthrough slots in the box, and screw into the plate 20; and the verticaladjustment of the tool box is secured by screws 24 screwing into acrosshead 25 on the plate 20.

The tools 18 are adjustable vertically by vertical screw studs 26screwing through the top of the box 19, and horizontally by studs 27screwing through the sides of the box, and pressing on the sides of thetools 18, of which there are four, one for each row of scorings, thelower portion of the tools being supported laterally by inwardprojections 29 on the inside of the box 19.

The tools are held in the box 19 sideways, that is on the outside, by aclamping plate Some of the tools may have heads on their tops whichtouch each other, and they all markings to be made on the sheet at oneedge by the tools, the markings being scorings of very shallow depth,say about 1/1000ths of an inch deep. This light scoring will be alsoapplied to the edge of the sheet or the tongue 4. To give these faintmarkings the tools are so set in relation to the anvil on which thesheet is scored, that they will at the end of their stroke, indent thesheet to the degree specified.

In Figure 1 it will be seen that the deeper scorings only commence onthe sheet some distance from one edge; and that the faint scoringsextend between the deeper ones and the edge of the plate. This isefi'ected by mechanism above described.

Referring now to the modified machine shown in Figures 5 to 8, in thiscase, the method of operating is to press the sheet on to the tools,which are stationary, and so effect the scorings, instead of pressingthe tools on to the sheet as it moves over a stationary anvil orsupport.

The frame or part 13 on which the stationary tool boxes are mounted, ismounted in a bed 14, over which the chain 7 is passed, the sheetssliding on the inner ledges of the support rails 10.

The tools are carried in their tool boxes 19, and adjusted thereinsimilarly as described with reference to Figures 1 to 4, but as stated,the anvils 6 are rapidly vibrated; and in this casethey consist each ofa bar, either round or other shape in the form of a ram, and supportedand guided in a cylinder 16 fixed on to the frame plate 13; and the ramis moved up by the intervention of the insertion device 43, which ismoved up and down by the lever 42, similarly as the part 43 in Figures 2to 4. The lever or arm 42 is rocked about its supporting shaft by aconnecting rod or link 41 from the crank shaft 39, and crank 40.

It is important that there be no elasticities or spring in thismechanism, in order that the depth of scoring be permanent, regular andas required; and in order that it may have this quality, the upwardmovement of the ram 6 is positively limited and stopped when it hasmoved the required amount, and this is simply and advantageouslyefiected by providing the ram with a collar or enlarged head 17, theupper annular face of which comes in contact with the lower face of theguide cylinder 16, and so determines and assures the length of thestroke with absolute precision, and therefore the depth and quality ofthe scorings is continuously determined and assured.

In this modified machine, to produce the intermittence of the scoringaction of the tools when the sheet passes from them, or before it hasleft them so as to leave a nonscored or faintly marked portion as abovedescribed, the wheel 62 is placed on the sheet feeding side of thecentre of the tools as shown in Figure 5 (also in Figure 1); and thepart of the ram 17 which is equivalent to the part in Figures, 2 to 4,is of different depths over its face, (or the part of the face which theend of the inserting bar device 43 acts upon), and this bar is pulledslightly away as shown in dotted lines in Figure 8, when it is desiredthe tools areto score faintly.

Instead of the end part 45 of the ram being stepped as shown, it may becurved or inclined, so that the faint scoring may be produced.

The link 48'which is connected with the part 43 and operates it, isactuated through a lever 46 which is pulled by a spring '46" at therequired time by a cam 57 on the cam shaft 54; and when the rams are notto receive their full stroke, as when the roller 62 is off the sheet, orno sheet is in, the bar 48 is lowered through the link 68, when itsouter end will be away from the head of the lever 6, which normally itwill be against when the tools are effecting the full scoring; andthereupon the spring 47 instantly pulls the lever 45 away from thedeeper portion of the head 45, so that the full stroke of the part 43will not be imparted to the ram 6.

When this takes place the cam 53 comes into action, and also moves thehead of the lever 46 back; and then when the sheet comes over the anvil,and under the roller 62, the link 48 will be pulled up, and the spring46 will move the lower part of the lever 46 to the cam body, and so thehead will press the bar and part 43 into this normal scoring po sition.

In this case, the sheets are supported by one rail 10 at one side, andthe ram at the other,- while-the chain 7 is supported by a longitudinalrail 2.

The chain 7, and sprocket wheel 9, over which it passes at the deliveryend, will be operated by palls 30 and eccentrics 31 on a shaft 58, fromthe main shaft 39 through gearing; and this shaft drives the cam shaft54 at the required reduced speed through a train of toothed wheels 69,which say gives a reduction of to 1; but this speed may be variedaccording to requirements.

What is claimed is 1. A method of providing a tearable band in metalsheets adapted for the formation of cans or the like, consisting inmoving a sheet step by step between a tool and an anvil and subjectingthe sheet to rapid blows of the tool to thereby indent the sheetthroughout with a series of indentations arranged in alignment toprovide a separable section in such sheet.

2. A method of providing a tearable band in metal sheets for theformation of cans,

consisting in feeding the sheet relative to a tool and an anvil andinducing relativemovement between the tool .and anvil to-successivelyindent the sheet in a series of aligned indentations to provide a bandin thesheet having weakened lines oi connection with the sheetthroughout its length.

3. A method of providing a tearable band in metal sheets for theformation of cans, consisting in feeding the sheet relative to a tooland an anvil and inducing relative movement betweenthe tool and anvil tosuccessively indent the sheet in a .series of aligned indentationstherelative movement between the tool and anvil being variable,

whereby to provide a band having lines of separation from the sheetwitlisuch vlinesiof varying strengths of connection with the sheet. V

4. A-imethod of providinga tearab'le band 10 in metal sheets adapted forthe formation of cans, consisting in feeding the sheet in a step by stepmovement between a tool and an anvil and inducingrelative movementbetween the tool and anvil ateach step movement oi": the sheet, withsuch relative movements between the tool and anvil varying at differentpoints of travel of the sheet to thereby form in the sheet a series 10fsuccessive indentations varying in depth to :thereby provide a bandwhich is separable from thesheet along predetermined lines of varyingweakness.

.5. A machine for providing a tearable band in plates or sheets for cansfor containing'goods, comprising tools andananvil, be-

tween which the sheets or plates are passed and operated upon by thetools, a contact device operated by the sheets or plates in theirtravel, means for vibrating the tools Or 40 the anvil; and a movablepart controlled by the contact device between the vibrating means andtheanvil, whereby the scoringor indenting efieet is regulated orcontrolled;

substantially as set forth.

'6. In a machine for providing a tearable f band in sheets adapted forformingcana an anvil over which a sheet is PTOgI'QSS lVGl-Y fed,

tool box, means for moving the tool box and anvil relative to eachotherand to the sheet, and a plurality oi tools arranged in said tool. boxtooperate on the sheet in the relative movement ot'thetool box and .anvilto form in the sheeta series oit' indentations defining a tearable band.1

1 In a -.machine for providing a v.tear'ahle wand insheets adapted forforming cans, an

anvil. over which, a sheet isnprogressively fed,

a tool box, means for moving the toolbox and anvil relative to eachother and to the sheet, a plurality of tools arranged .in said tool boxto operate -;on the sheet IlI1-:-tl16 rela tive .moveinent ofthe toolboxand anvil to form in the sheet a series of indentations-defining atearable band and-means whereby the tools may be independently adjustedin the tool. box.

8. A machine fox-providing a tearable band in sheets, comprising aplurality of indenting tools, an anvil for the'sh'eet, 1ne ans forinducing a relative movement betweenv the anvil and tools, means forfeeding-the sheet in a step bystep movement relative to theanvil andtools, and means whereinthe relative operative movement between thetools and anvil is rigidly :limited :toavoid. elasticity in the action.

In testimony whereof name to this specificationinithe presence of twosubscribing witnesses.

FRANK EDWARD ADAMS. \Vitnesses:

Srnnaienv MARGARET -DONALDSQN, MAY GINSBURG'.

I have signed any 7

